HEC-SSP Tutorials and Guides Parametric Modeling Current: Task 12. Fit and Compare Multiple Models to the All-Season 1-Day Precipitation Time Series PDF Download PDF Download page Task 12. Fit and Compare Multiple Models to the All-Season 1-Day Precipitation Time Series. Current page All pages Task 12. Fit and Compare Multiple Models to the All-Season 1-Day Precipitation Time Series Do not use a season when filtering the data.Accept a model and estimate quantile information.The GEV | Linear Moments model was chosen and is shown in Figure 1.Continue to Task 13. Compare the results of the winter, spring, and all-season 1-day precipitation models. ×